As a keen walker and camper, I was excited when I spotted OutDoors – GB National Parks OS Maps in the App Store. Although at first glance you may think it’s quite expensive ($24.99 US), when you add together how much it would have cost to buy the physical versions of all the maps included, it’s actually a bargain. Plus you can never blame poor map reading again as with GPS, you’ve got no excuse for not knowing where you are!